Authors: Michael B. Thomas and Casey Jones
Publication: Poamoho Ridge Trail Plant Checklist. Joseph F. Rock Herbarium. Botany Dpeartment, University of Hawaii at Manoa, Honolulu, HI
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Locality: Ko`olau Mountains, Oahu, Hawaiian Islands (21.536803, -157.977299)
Abstract: Preliminary plant checklist complied during day hike (Nov 11, 2015).
Participants: Casey Jones, Cat Peterson, Anne Murphy, Tamara Luthy, Nada McClellan, Evan Yazawa, Shawn Garrard, Melanie Spielman.

Poamoho Ridge Trail is a spectacular ridge hike which traverses along a ridge through mostly native forest up to the Ko`olau Summit. The trail is quite narrow in sections and is not suitable for novice hikers. The trail offers a wide variety of native plants - some of them quite rare. From the summit, Poamoho Trail rewards hikers with awesome views of Kahana and Punalu`u Valleys and the north-eastern shores of Oahu. ACCESS BY PERMIT ONLY.

The trail is part of the Oahu Ko'olau Summit Trail complex. The trail was constructed in 1934 by the Civilian Conservation Corps as a result of collaboration between the Territorial Forestry Division and the United States Army in soliciting Congress for critically needed emergency conservation work funds. During this period, trails were constructed in the Ko'olau Mountains of Oahu, for the purpose of improving access to remove feral animals and for military defense. Over the ensuing sixty years, the Poamoho Trail became one of the premiere recreational hiking rails to the summit of the Ko`olaus. The Ewa Forest Reserve is a significant public watershed and access for hunting, as well as recreational hiking, is critical for the control of feral pig populations to maintain the quality of the watershed.

Trail Length: Access Road: 6 mi. Trail: 3.5 mi.
Terrain: Wet, mountainous. Thick canopy
Elevation: 800 ft

Reference https://hawaiitrails.ehawaii.gov/trail.php?TrailID=OA+08+007

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Families: 20
Genera: 24
Species: 28 (species rank)
Total Taxa: 28 (including subsp. and var.)
Sanicula purpurea H.St.John & Hosaka - English: purpleflower blacksnakeroot
Montane Wet Forest, Rare, Endangered
Montane Wet Forest, Uncommon
Pritchardia martii (Gaudich.) H.Wendl. - English: Koolau Range pritchardia, lo'ulu
Montane Wet Forest, Uncommon
Bidens macrocarpa (A.Gray) Sherff - English: largefruit beggarticks
Montane Wet Forest, Common
Dubautia laxa Hook. & Arn. - English: na`ena`e pua melemele
Montane Wet Forest, Sparse
Montane Wet Forest, Rare
Montane Wet Forest, Uncommon
Machaerina angustifolia (Gaudich.) T.Koyama - English: Polynesian twigrush
Montane Wet Forest, Common
Vaccinium reticulatum Sm. - English: ohelo 'ai
Montane Wet Forest, Uncommon
Acacia koa A.Gray - English: koa; Hawaiian: koa, koa`oha
Montane Wet Forest, Common
Dicranopteris linearis (Burm. f.) Underw. - English: uluhe, Old World forkedfern
very common
Scaevola glabra Hook. & Arn. - English: 'ohe naupaka
Montane Wet Forest, Rare
Montane Wet Forest, uncommon
Broussaisia arguta Gaudich. - English: kanawao
Montane
Phyllostegia lantanoides Sherff - English: Oahu phyllostegia
Montane Wet Forest, Common
Montane Wet Forest, Rare
Metrosideros polymorpha Gaudich. - Hawaiian: 'ohi'a lehua
Abundant
Montane Wet Forest, Common
Montane Wet Forest, Uncommon
Montane Wet Forest, Rare
Bobea elatior Gaudich. - English: ahakea
Montane Wet Forest, Uncommon
Kadua affinis DC. - English: variable starviolet
Montane Wet Forest, Common
Montane Wet Forest, Rare
Montane Wet Forest
Montane Wet Forest, Uncommon
Montane Wet Forest, Rare, Endangered
Montane Wet Forest, Uncommon
Smilax melastomifolia Sm. - English: Hawai'i greenbrier
Montane Wet Forest, Uncommon

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Development of the Consortium of Pacific Herbaria and several of the specimen databases have been supported by National Science Foundation Grants (BRC 1057303, ADBC 1304924 and ADBC1115116). Data Usage Policy. Copyright © 2015 University of Hawai‘i.

How to Cite: M.B. Thomas, J.F. Rock Herbarium, University of Hawaii at Manoa. 2015. Consortium of Pacific Herbaria Database (CPH). Available from: http://www.pacificherbaria.org/ (date accessed)

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